3G+ - E1752 under Debian

Hi to Everyone !

Would anyone here have any experience about Huawei E1752 under Debian or Ubuntu ?

I have previously succeeded in connecting a 'Huawei ABCD', using 'sakis 3G'. But I have now subscribed to another package, which uses E1752, and 'Sakis 3G' does not achieve any useful connexion.

'lsusb' tells me that the key has the ID 12d1:1446 as a mass storage device. After switching (using either 'Sakis 3G' or 'usb_modeswitch'), it identifies as 12d1:141b. /var/log/messages then tells me that it is being reckognized as a GSM modem and that it is attached to ttyUSB0 and to ttyUSB1. So far so good.

Then, the connecting process starts. 'Sakis 3G' does a few guesses and tests and it tries various parameters for various Internet Providers. In the end, it seems to obtain a connection that only lasts one or two seconds, as shown below from /var/log/messages :


*****************************
pppd 2.4.4 started by root, uid 0
using interface ppp0
Connect: ppp0 <---> /dev/ttyUSB0
Warning: secret file /etc/ppp/pap-secrets has world and/or group access
Warning: secret file /etc/ppp/chap-secrets has world and/or group access
CHAP authentification succeeded
CHAP authentification succeeded (line repeated twice)
Modem hangup
Connexion terminated
Exit.
******************************

This being done, I have carried tests using wvdial. Here is the contents of my /etc/wvdial.conf file :

******************************
[Dialer Defaults]
Modem = /dev/ttyUSB0
Init2 = ATZ
Init3 = ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
ISDN=0
Modem Type = 3G Orange
Phone = *99#
Username = orange.ie
Password = orange.ie
*****************************

Therefore, I type :
sudo comgt -d /dev/ttyUSB0

My PIN code is then requested, and I enter it (0000)
I get this :

*****************************
SIM ready
Waiting for Registration..(120 sec max)
Registered on Home network: "20801",2
Signal Quality: 11,99
*******************************

Then I tape :
sudo wvdial

**********************************
bd@dell-desktop:~$ sudo wvdial
--> WvDial: Internet dialer version 1.60
--> Cannot get information for serial port.
--> Initializing modem.
--> Sending: ATZ
ATZ
OK
--> Sending: ATZ
ATZ
OK
--> Sending: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
OK
--> Modem initialized.
--> Sending: ATDT*99#
--> Waiting for carrier.
ATDT*99#
CONNECT
--> Carrier detected. Waiting for prompt.
--> Don't know what to do! Starting pppd and hoping for the best.
--> Starting pppd at Fri Aug 6 18:09:22 2010
--> Pid of pppd: 29127
--> Using interface ppp0
--> Disconnecting at Fri Aug 6 18:09:24 2010
**********************

And here is the output of /var/log/messages :

*************************
Aug 6 18:09:22 dell-desktop pppd[29127]: pppd 2.4.4 started by root, uid
0
Aug 6 18:09:22 dell-desktop pppd[29127]: Using interface ppp0
Aug 6 18:09:22 dell-desktop pppd[29127]: Connect: ppp0 <--> /dev/ttyUSB0
Aug 6 18:09:22 dell-desktop pppd[29127]: Warning - secret
file /etc/ppp/pap-secrets has world and/or group access
Aug 6 18:09:22 dell-desktop pppd[29127]: Warning - secret
file /etc/ppp/chap-secrets has world and/or group access
Aug 6 18:09:22 dell-desktop pppd[29127]: CHAP authentication succeeded
Aug 6 18:09:22 dell-desktop pppd[29127]: CHAP authentication succeeded
Aug 6 18:09:23 dell-desktop pppd[29127]: Modem hangup
Aug 6 18:09:23 dell-desktop pppd[29127]: Connection terminated.
Aug 6 18:09:23 dell-desktop pppd[29127]: Exit.
*****************************

No need to say that I have tried this several times, with same results.
A test under MSWIN XP did give a connection.

It may be that the sent parameters are not the right ones to obtain a connexion with wvdial, but I don't know what else to try.

Thanks in advance for your help.




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